#include<sys/types.h>
#include<sys/socket.h>
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<errno.h>

int main()
{
	int socket_fd;

	socket_fd = socket(AF_INET , SOCK_STREAM, 0);
	if(socket_fd == -1){
		printf(" create socket failed \n ");
	}else{
		printf("socket_fd : %d\n",socket_fd);
	}

	exit(1);
}
